P077E
Transmission Fluid Temperature Measurement System - Multiple Sensor Correlation
Modern transmissions can have two or more ATF temperature sensors (sump, cooler return, valve body). After a long key-off soak they should all read approximately the same ambient. The TCM detects an implausible spread between sensors — one of them drifts or is wired wrong.
Modern transmissions can have two or more ATF temperature sensors (sump, cooler return, valve body). After a long key-off soak they should all read approximately the same ambient. The TCM detects an implausible spread between sensors — one of them drifts or is wired wrong.
Common causes
- high
One sensor drifting outside tolerance
One of the most commonly reported causes for this code — check this first.
Typical part cost: $170-880
- medium
Sensors swapped after service
A plausible cause — test and verify before replacing parts.
Typical part cost: $170-880
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P077E mean?
P077E means "Transmission Fluid Temperature Measurement System - Multiple Sensor Correlation". It is a generic OBD-II code that points to a fault in the transmission.
What are the most common causes of P077E?
one sensor drifting outside tolerance; sensors swapped after service — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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